Platform ladder anti-pinch system

The utility model discloses a platform ladder anti-pinch system which comprises a platform ladder, a back plate is vertically arranged on the rear side of a floor of the platform ladder to form an L shape, a motor is installed on the back face of the back plate, safety edges are arranged on the left side, the right side and the front side of the floor, and the left side, the right side and the front side of the floor are surrounded by the safety edges on the three sides. The tops of all the safety edges are higher than the floor, the safety edges are hinged to the floor through spring hinges so that the safety edges can rotate downwards with hinge shafts of the spring hinges as centers when the safety edges are stressed, travel switches corresponding to the spring hinges are further arranged on the bottom side of the floor, and the travel switches are used for detecting whether the safety edges rotate or not. When the platform elevator is taken, articles or human bodies can be prevented from being clamped bet